41 Conducting courses of instruction and training seminars pertaining to the use and application of -- heat treating, cleaning, etching, implanting and leveling machines for use in the manufacture of semiconductors; lithographic and implanting machines for producing images, and printing or implanting images on wafers and other substrates; electron-beam columns and systems; reticles and masks for use with said lithographic and implanting machines; interactive maintenance guide software to decrease customer support costs by reducing MTTR, improving stepper uptime, and enhancing the overall quality of manufacturer service activities of stepper machines; and software to optimize stepper performance for the production of semiconductor chips; and disseminating audio, video and printed training materials in connection therewith